A Simple Correlation Equation to Predict Pump Performance for Slurry

2013 ◽  
Vol 365-366 ◽  
pp. 365-369 ◽  
Author(s):  
Peng Cheng He ◽  
Peng Yun Song
Keyword(s):  
Experimental Data ◽  
Centrifugal Pump ◽  
Correlation Equation ◽  
Simple Equation ◽  
Correlation Equations ◽  
Experiment Data ◽  
Simple Correlation ◽  
Pump Performance ◽  
Related Literature ◽  
Good Agreement

As to the centrifugal pump for slurry, the effects of solids particles on the performance of the pump have been extensively researched. It is essential to understand the effects of solids on the pump performance well in order to obtain the performance of centrifugal pump for handling slurries. Some existing correlation equations to predict the performance are analyzed and summarized in this paper. A new simple correlation equation to predict the head ratio for pumps handling solids has been developed. The simple equation has been validated by the experiment data published in the related literature. The results by the simple equation are compared with ones available in the literature. The result shows that the simple equation is in good agreement with the experimental data, and it can be used to predict the performance of centrifugal pump for slurry.

Configuration Pump Performance Test System Design Based on Kingview

2011 ◽  
Vol 121-126 ◽  
pp. 3195-3199
Author(s):  
Li Feng Yang ◽  
Jun Yuan ◽  
Wei Na Liu ◽  
Xiu Ming Nie ◽  
Xue Liang Pei
Keyword(s):  
Experimental Data ◽  
Data Processing ◽  
System Design ◽  
Centrifugal Pump ◽  
Performance Test ◽  
Test System ◽  
Performance Parameters ◽  
Time Data ◽  
Pump Performance ◽  
Real Time Data

Use Kingview to acquire and display the centrifugal pump performance parameters for the real-time data, and will stored the collected experimental data in Access databases, using VB database read, and drawing function for the data processing and rendering performance parameters of relationship curves.

Bohr Hamiltonian with screened Kratzer potential for triaxial nuclei

2020 ◽  
Vol 29 (10) ◽  
pp. 2050082
Author(s):  
Y. Omon ◽  
J. M. Ema’a Ema’a ◽  
P. Ele Abiama ◽  
G. H. Ben-Bolie ◽  
P. Owono Ateba
Keyword(s):  
Experimental Data ◽  
Wave Function ◽  
Energy Spectrum ◽  
Experiment Data ◽  
Uvarov Method ◽  
Good Agreement

In this paper, Bohr Hamiltonian is used to describe the behaviors of triaxial nuclei with screened Kratzer potential. The Nikivorov–Uvarov method is used to derive the energy spectrum and corresponding wave function. The electric quadruple transition ratios and energy spectrum of the [Formula: see text]Xe, [Formula: see text]Xe, [Formula: see text]Xe, [Formula: see text]Xe, [Formula: see text]Xe, [Formula: see text]Pt, [Formula: see text]Pt and [Formula: see text]Pt are calculated and compared with the experimental data. The results are in good agreement with experiment data.

Models for Pressure Drop for Poiseuille Flow in Trapezoidal and Triangular Microchannels in Silicon

2011 ◽  
Author(s):  
M. Michael Yovanovich
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Correlation Equation ◽  
Silicon Substrates ◽  
Maximum Difference ◽  
Simple Correlation ◽  
Flow Through ◽  
Extensive Experimental Data ◽  
Novel Model ◽  
Circular Microchannels

Models, numerical and experimental results for developed laminar flow of liquids in long isosceles trapezoidal and triangular microchannels KOH-etched in < 100 > silicon substrates are reviewed and compared. The equivalent rectangle model (ERM) based on a novel model for the effective aspect ratio was developed for non-circular microchannels; it will be compared with the numerical results of Morini (2004) and McHale and Garimella (2010) as well as the extensive experimental data of Wu and Cheng (2003) for several trapezoidal and triangular microchannels. In addition, a simple correlation equation for all numerical and experimental data (62 points) is presented. The equivalent rectangle model is accurate with rms difference of 3.1%. A maximum difference of −7% occurs for data obtained for flow through four very narrow trapezoidal microchannels.

Numerical Simulation of Cavitation Phenomena in a Centrifugal Pump

2009 ◽  
Author(s):  
Freddy Jeanty ◽  
Jesu´s De Andrade ◽  
Miguel Asuaje ◽  
Frank Kenyery ◽  
Auristela Va´squez ◽  
...  
Keyword(s):  
Experimental Data ◽  
Centrifugal Pump ◽  
Cfd Simulation ◽  
Common Phenomenon ◽  
Performance Parameters ◽  
Centrifugal Pumps ◽  
Cavitation Model ◽  
Cfd Simulations ◽  
Global Performance ◽  
Good Agreement

Cavitation is a common phenomenon that appears during the operation of the hydraulic turbomachines reducing performance and life of Centrifugal pumps. The main goal of this work is primarily a CFD-simulation of the whole Centrifugal Pump-Turbine including the suction cone, impeller, diffuser blades and volute, in order to characterize and evaluate its performance under cavitation conditions. The CFD simulations results were compared with experimental data under cavitation and non-cavitation conditions. A good agreement has been obtained under non-cavitation conditions for global performance parameters. After the implementation of the Rayleigh Plesset cavitation model, the required Net Positive Suction Head (NPSHr) has been predicted from CFD simulations. Finally, a full cavitation test can be reproduced for a Hydraulic Turbomachine to avoid this dangerous phenomenon.

scholarly journals Influences of Diffuser Vanes Parameters and Impeller Micro Grooves Depth on the Vertically Suspended Centrifugal Pump Performance

2019 ◽  
Vol 35 (5) ◽  
pp. 735-746
Author(s):  
D. Khoeini ◽  
E. Shirani
Keyword(s):  
Experimental Data ◽  
Centrifugal Pump ◽  
Flow Rate ◽  
Numerical Results ◽  
Geometric Parameters ◽  
Profound Impact ◽  
Pump Performance

ABSTRACTEffects of geometric parameters of diffuser vanes as well as impeller micro grooves depth on the performance of a vertically suspended centrifugal pump have been studied. Different diffuser vanes height,leading angles, trailing angles, wrapping angles and furthermore, impeller micro grooves depths have been analyzed thoroughly. Numerical results have been verified by comparing experimental data. Results, without considering cavitation, reveal that diffuser vanes height has the profound impact on the vertically suspended centrifugal pump performance followed by vanes wrapping angle. Additionally, it is observed that delivered head and efficiency of micro-grooved impellers reduce more by flow rate enhancing rather than that of the original impeller.

Centrifugal Pump Pressure Pulsation Prediction Accuracy Dependence Upon CFD Models and Boundary Conditions

2009 ◽  
Author(s):  
Sang Hyun Park ◽  
Gerald L. Morrison
Keyword(s):  
Experimental Data ◽  
Boundary Conditions ◽  
Mass Flow Rate ◽  
Centrifugal Pump ◽  
Mass Flow ◽  
Flow Rate ◽  
Pressure Pulsation ◽  
Cfd Simulations ◽  
Pump Performance ◽  
Inlet Condition

Unsteady CFD simulations for a low specific speed open faced impeller centrifugal pump operating with and without balancing holes and having cut-away sections of the impeller are performed and compared to experimental data obtained using the actual pump simulated. For this simulation, the entire pump from suction inlet to exit flange is modeled. General pump performance characteristics are compared between the actual pump and the simulation. Pressure pulsation data are recorded at various locations in the pump using flush mounted pressure transducers and directly compared to the simulation results. Pressure spectrum data are used to evaluate the effects of three different boundary conditions upon the accuracy of the pressure pulsation simulations as well as the overall pump performance. These boundary conditions are a) fixed inlet and exit pressure, b) mass flow rate inlet condition with outflow exit, and c) target mass flow rate inlet with outflow exit which lets the inlet pressure fluctuate. All of these are available in the commercial CFD package utilized. Based upon comparisons between CFD simulations and experimental data for both the steady and unsteady conditions, the mass inlet condition is found to produce the best overall results for the installed pump.

Study of a Bionic Anti-Erosion Blade in a Double Suction Centrifugal Pump

2016 ◽  
Author(s):  
Zhongdong Qian ◽  
Jing Dong ◽  
Zhiwei Guo ◽  
Zhiyuan Wang ◽  
Fan Wang
Keyword(s):  
Centrifugal Pump ◽  
Erosion Resistance ◽  
Suction Side ◽  
Blade Surface ◽  
Experiment Data ◽  
Lower Efficiency ◽  
Erosion Rates ◽  
High Erosion Rate ◽  
Bionic Blade ◽  
Good Agreement

A bionic blade with convex domes was applied in a double suction centrifugal pump to improve erosion resistance of the blade surfaces in this study. The hydraulic performance of the pump was simulated and the numerical results were in good agreement with the experiment data. The erosion rates of the smooth blade and bionic blades with convex domes at different heights (1.0 mm, 1.5 mm, 2.0 mm ) were numerically predicted. The results showed that the pump with bionic blades had a higher head and a lower efficiency than those of the pump with smooth blades. A comparison of the erosion rates indicated that the bionic blades exhibited much better erosion resistance than the smooth surface ones. The high erosion-rate area was reduced remarkably and the erosion region became more dispersed on the whole bionic blade surface. The pressure side of the blade with 2.0 mm-height convex domes showed better anti-erosion performance than those with other two heights, while the suction side with 1.0 mm-height domes showed better anti-erosion performance.

An Approach to Predict Creep Strain and Rupture Life of Heat Resistant Steels Based on ZC Parameter

2018 ◽  
Vol 774 ◽  
pp. 559-563
Author(s):  
Jie Zhao ◽  
Tie Shan Cao ◽  
Xin Yue Liu ◽  
Cong Qian Cheng
Keyword(s):  
Experimental Data ◽  
Creep Strain ◽  
Rupture Life ◽  
Current Method ◽  
Experiment Data ◽  
Statistic Method ◽  
Heat Resistant ◽  
Heat Resistant Steels ◽  
Main Curve ◽  
Good Agreement

The current paper proposes a so-called Zc method to evaluate creep strain and rupture life of heat resistant steels by considering the scattering distribution of experimental data, where the Zc value indicates the deviation of the fitted σ-P curves at different creep strains to the main curve. It is shown that the value of Zc increased rapidly at first and then became stable with increasing creep strain, meanwhile, the degree of deviation between experiment data and the corresponding fitted curves came to decrease. The current method provides a statistic method for predicting creep stain and rupture life and get good agreement with experiment result.

Effective Stress Factor Correlation Equations for Piping Branch Junctions Under Internal Pressure Loading

1999 ◽  
Vol 121 (2) ◽  
pp. 121-126 ◽  
Author(s):  
D. G. Moffat ◽  
J. Mistry ◽  
S. E. Moore
Keyword(s):  
Experimental Data ◽  
Finite Element ◽  
Internal Pressure ◽  
Effective Stress ◽  
Parametric Study ◽  
Correlation Equation ◽  
Stress Factors ◽  
Correlation Equations ◽  
Pressure Loading ◽  
Element Data

The results from a previous finite element parametric study by the authors on the effective stress factors (ESFs) occurring in piping branch junctions under internal pressure loading are used to produce an ESF correlation equation for use in design. This is compared with some experimental data and also with other finite element data. Results suggest that ESFs can be predicted with some confidence using the correlation equation.

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